Mahle filters – the importance of correct installation

Hi all

As a supplier of Mahle filters, it is our responsibility to let those of you that purchase them aware of the correct methods of installation, and any potential issues that may arise from incorrect installation.

One such filter that has caused some issues recently is the Mahle OX388D. This filter is designed to fit 1.6 and 2.0 TDI engines, primarily diesel engines from the VW group. Problems that arise from incorrect installation can include the oil filter housing leaking in the engine. Not good! This can occur if excessive torque is applied to the housing cover.

The instructions below are to show you that with the correct tools and taking the time to make sure everything is fitted correctly, then you will have nothing to fear!


Figure 1: The oil filter insert in question, OX 388D, with the accompanying oil filter module.

Figure 2: This is the important bit – In this image, you can see the torque specification on the housing cover, 25Nm. After the oil filter insert is changed, the cover is screwed back onto the housing; the permissable torque is 25Nm (+5Nm)

Figure 3: Here you can see an undamaged thread on the oil filter housing, if it has been torqued correctly during installation, then this is what yours should look like!

Figure 4: In this image, you can see the damaged thread, which is due to it being forced on and over tightened. The damaged thread, and warped cover can result in leakage from the housing cover and loss of engine oil.

IMPORTANT! When changing the filter, always use a torque spanner to ensure compliance with the manufacturers specifications – a standard spanner will not do! Also, to prevent damage, we recommend coating the new gaskets with clean engine oil before fitting.

You can view this particular filter HERE. If you need a high quality tools that have been designed specifically for the task at hand, then you can find our full range HERE. Also available are filter removal tools and wrenches, which are really handy when you’ve got a stubborn filter that refuses to budge, you can find them HERE. We stock a huge range of Mahles high quality products, you can use our handy look up guide HERE to find the correct one for you – just enter your vehicle details to get started and you will find all the suitable, oil, air, cabin and fuel filters for your car.

As soon as we are made aware of any potential issues by Mahle, we will be sure to let you know of the relevant fitment procedure to avoid any problems. We are kept up to date on a regular basis, but if there are any queries that you may have on a particular product, then please get in touch and we would be happy to chase it up with with the technical guys at Mahle!

You can give us a call on 01209 202 944 or drop us an email to We’re in the office Monday to Friday, 8:30 – 5:30.

Until next time!


No comments yet.

Submit a Comment

We would love to hear your thoughts. Feel free to submit a comment and join the conversation!